Tube-frame carrier and support for carpet looms



Oct. 26 1926. 1,604,318

w. W. ROBERTSCN,

TUBE FRAME CARRIER AND SUPPOFT FOR CARPET LOOMS Filed J n 18. 1923 2 Sheets-Sheet 1 Oct. 26 1926. 1,604,318

w. w. ROBERTSON TUBE FRAME CARRIER AND SUPPORT FOR CARPET LOOMS Filed June 18. 1923 2 Sheets-Sheet 2 fig/.3 F.

Patented (let. 26, 1926.

u a i r an s r 4 'WILILIAM EV. ROBERTSON, F 'WGRCESTEB, I'JIASSACHUSETTS, ASSIG-NOR TO CROMETON 8c KNOWLES LOOM VIORKS, OF VIORGESTER, MASSACE'USETTS, A CORPORATION OF MASSACHUSETTS.

TUBEFBAME CARRIER AND SUPPORT FOR CARPET LOGIVIS.

Application filed June 18, 1923.

This invention relates to a carrier or support for the tube frames which insert the pile yarn in fabrics of the Axi'ninster carpet type.

In certain looms for such fabrics, the tube frames are given a rocking motion to swing or wipe the yarn between the warp threads, in addition to the usual reciprocating vertical movement. It is the general object of my invention to improve the construction of looms of this type by providing a tube frame supporting member or carrier extending across the loom and movable with the yarn tube frame, to support and stiffen the frame during the insertion of pile yarn thereby.

My invention further relates to arrange ments and combinations of parts which will be hereinafter described and more p" e. larly pointed out in the appended c a A preferred form of the invention is shown in the drawings, in which Fig. 1 is a plan view of parts of a carpet loom embodying my improvements;

Fig. 2 is a side elevation of the parts shown in Fig. 1;

Fig. 3 isa partial front elevation of a tube frame and carrier, looking in the direction of the arrow 3 in Fig. 2;

Fig. 1 is an end elevation of the parts shown in Fig. 3;

Fig. 5 is a view similar to t but showing the parts in a different position;

Fig. 6 is a perspective view of a middle portion of a tube frame, looking from the rear;

F 7 is a sectional elevation taken along the line 77 in Fig. 1;

Fig. 8 is a detail front view looking in the direction of the arrow 8 in Fig. '4", and

Fig. 9 is a detail view of a spring releas ing slide.

Referring tothe drawings, 1 have shown certain parts of an Axminster carpet loom of a commercial type, including a frame 10, a lay 11, a reed 12, a front knife 13 and a back knife frame 1%, all as usual. A pair of arms 15 projecting forwardly at the opposite sides of the loom provide bearings 16 fora pair of short shafts or studs 1?. Tube frame holders 18 are firmly secured to the inner ends of the shafts 17 and receive and Serial No. 645,954;

support the ends of each tube frame while the yarn carried thereby is inserted between the warp threads.

The arms 15 are bolted to supports 20 piv oted upon a heavy cross shaft 21 at the rear of the loom. The supports 20 are moved vertically to raise and lower the tube frames by rods 22 connected to suitable actuating mechanism not shown.

Short arms 23 (Figs. 8 and are fixed to the outerends of the shafts 17 and are connected by links 2% to cam levers 25 (Fig. 2) pivoted at 26 and actuated by connecting rods 21' from driving mechanism not shown. lteciprocation of the rods 27 causes the arms to rock about the axis of the shafts 17 and to give the tube frame supported by the holders 18 a rocking or wiping motion to insert the yarn between the warp threads.

The tube frames and their supporting end brackets are in general of the usual type and each bracket-includes a vertically projecting guide or positioning member 30 and a spring 31 which forms a supporting and attaching hook by which the tube fran'ie is connected to one the transporting chains. When a tube frame is to be released from the transporting chains to permit downward movement thereof by the arms 15, the spring hooks 31 are forced inward away from the transporting chains by slides 32 (Figs. 3 and 9) actuated by levers 823. The outer portions of the levers are formed in arcs of circles concentric with the axes of the shafts 17, so that the levers have operative engagement with the slides 32 in every angular position of the tube frame holders 18. The levers 33 are pivoted at 3 1 on the supports 20 and are moved simultaneously in opposite directions by links 85 actuated by driving mechanism not shown.

F or a complete disclosure of operating mechanism for the parts thus far described, reference is made to the prior patent to Smith and Skinner, No. 186,37 issued Jan. 16, 1877. I

A support or carrier is mounted on the tube frame holders 18 and extends across the loom from one frame holder to the other. The carrier 10 is preferably formed of two plates ll and 4:2 (Fig. 7) of relatively heavy sheet metal riveted together along the edges to form a structural member having a substantially diamond shaped hollow section. The upper plate ll is extended at d3 to form a flange or shelf upon which the rectangular tube all of the tube frame is firmly supported.

A plate l5 (Fig. 6) is preferably secured to the rear side of the tube l t near its middle portion and forms a loop or strap adapted to receive a portion d6 of the plate all which projects upwardly into an opening l? formed in said plate. is the tube frame is deposited in the holders 18, too loop 4-5 slips easily over the projection id and prevents lateral dif'zplacement of the tube frame" and carrier. The upper edge and corners of the projection and the lower edge of the strap 4:5 are beveled as indicated in Figs. and 8 to assist in easily assembling the parts. A bar l8 (Fig. may be inserted between the plates ll and d2 to strengthen the carrier near the point where the opening 2? is made therein.

if desired, the rear plate ll-2 may be cut oil at the ends as indicated in Fig. l, leaving the longer plate ll to be attached to the inwardly projecting portions of the tube frame holders 18.

Having described the details of construction of my improved mechanism, the operation thereof will be readily understood. As successive tube frames are presented by the transporting chains to the ar ns 15 and holders 18, the levers are moved inward to release the hooks 31 from the chains and the arms 15 are moved downward to present the released tube frame to the warp, the tube frame being now firmly supported by the carrier 40. As the tube frame is lowered, the holders 18 and carrier 40 are rocked about the axis of the shafts 17 by the arms 23 and the operating mechanism connected thereto, thereby swinging the tube frame from the position shown in Fig. l to that shown in Fig. 5 as the tube frame reaches its lowest position.

l he parts are tnen swung backward to the position shown in l, inserting the yarn tubes between the warp threads with a swingino" or wiping motion, after which the tube frame is raised slightly above the warp threads. The yarn is then cut by the usual front and rear knives and the tube frame is raised to its original position. The hooks 2-31 are last released to attach the tube f :me to the transporting chains.

The provision of the connecting carrier i0 is found to be of great advantage in determining the accurate movement of the yarn tubes, particularly in modern carpet looms in which the length of the yarn tube frame has been greatly increased.

Having thus described my invention and the advantages thereof 1 do not wish to be limited to e details herein disclosed other wise than as set forth in the claims but "-c-rhat I claim is:-

1. In a pile fabric car et loom, a yarn tube frame, movable holders for said frame,

:06 frame carrier movable with and said "rame holders and engagsaid tube frame substan irous hoi its length, said tube frame 162 and said tube frame having, portions fixed therein and co-operating by movement in the dir ction of )resentation of said tube rame, by which co-operation said tube frame is definitely s cured to said tube frame 'ier at a point intermediate its ends.

In a pile fabric carpet loonnia yarn movable holders for aid frame, frame carrier movable with and 3 frame holders and support- 'ne substantially through- 1, said carrier being formed o sheet metal plates secured together eir lon tudinal edges and bent to form c of suhstanti ally diamond ection, one of said plates havlower edge portion fo mflange ft said tube frame. fabric carpet loom, a yarn able holders for sai frame. earner movable with and frame holders aml supports ibstantially throughcarr er having a projec- .ts center of length anu said tube frame having a loop adapted to engage said pro ection when said tube frame is supportct. by sflil carrier and to hold said frame from displacement on said carrier.

4;. In a pile fabric carpet loom, a yarn be frame, bracket: on said fran'ie, attacln springs on said brackets, holders for sliding members in said holdengraginn' sa'd sprin gs, and actuating move said and a ti anda (illllllQQclllj' s id Si iding members to I have hereunto lVlILLlAlrE ll. ROBERTSQN.

said frame 

